一起配网10kV线路接地引起多重并发事故案例分析
Analysis of a Case of Multiple Accidents Caused by Grounding of a 10 kV Distribution Network Line
黄振华 1陈根奇 1王少春 1赵印明 2陈艳 1李成标 1杜旭1
作者信息
- 1. 国网浙江绍兴供电公司,浙江 绍兴 312000
- 2. 浙江中通文博服务有限公司,浙江 绍兴 312000
- 折叠
摘要
介绍了一起10 kV线路因单相接地故障,引起其他线路绝缘性能降低,造成相间短路,同时因为温渎变电站华都 9031线开关机械卡涩无法正常分闸导致越级跳闸的事故案例,对事故的处置流程进行了详细描述,同时对故障的原因进行了分析,最后给出相应的整改措施.
Abstract
This article introduces an accident case of a 10 kV line due to a single-phase grounding fault and voltage rise,which resulted in a decrease in the insulation performance of other line cable heads,resulting in a phase to phase short circuit.At the same time,due to the mechanical jamming of the line switch,it was unable to open normally,resulting in a skip trip.The handling process of the story is described in detail,and the cause of the fault is analyzed.Finally,corresponding corrective measures are provided.
关键词
配网/接地/越级跳闸/电缆故障Key words
distribution network/grounding/skip level tripping/cable failure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据